<abstract xmlns="http://www.w3.org/1999/xhtml">

This paper presents an analysis and results of experimental tests of full-scale prefabricated balcony sets with dimensions (width × length × height): 2.0 m × 2.78 m × 0.186 m (in a slope to 0.17 m). The sets consist of reinforced concrete slabs (balcony and ceiling) connected with each other with double-type balcony connections. The paper analyses the impact of variable parameters on the load bearing capacity of the elements. Additionally, an overview of current scientific and technical papers in the field of balcony connections is provided.
</abstract>

Experimental tests of steel double-type balcony connections

<abstract xmlns="http://www.w3.org/1999/xhtml">

Discoveries in medicine concerning the influence of light on human physiology provoked the creation of the Human Centric Lighting (HCL) approach. Research dedicated to this mainly focuses on optimally matching light parameters to human needs, e.g. increasing concentration, relaxation, etc. However, only a properly designed light source is capable of meeting HCL goals. This paper focuses on the LED luminaire design used in HCL systems. A review of LEDs dedicated to HCL systems was performed. Their advantages and disadvantages are discussed. The Tunable White (TW) design is shown to be the most universal solution for HCL systems because it enables regulation of the colour temperature and spectrum, depending on user needs. However, TW is also the most complex in design. The problems that might arise during TW luminaire design are discussed. Example strategies on how to solve them, focusing on colour mixing and LED arrangement are given. Practical examples of TW luminaire design are also described, each one with a commentary covering encountered issues and their solutions.
</abstract>

Human centric lighting luminaires: practical design

<abstract xmlns="http://www.w3.org/1999/xhtml">

The article presents an extended model of the Solina-Myczkowce pumped storage power plant with the designed new reservoir and Jawor power plant. Different design cases for the size of the reservoir located on Mt. Jawor were considered. In building the model, a modular approach was used to clearly distinguish elements of the model. In order to capture seasonal changes in both hydrological conditions and power demand values, a period of 365 days was assumed for the simulations. The simulations assumed the form of criteria defining on/off moments and defining the turbine/pump turbine operating regime using the daily variation of energy prices. All constraints arising from the physical parameters and limitations of the cascade facilities as well as those arising from the provisions of the current Water Management Manual for the Solina-Myczkowce cascade were taken into account. The model was designed and executed using the Matlab-Simulink interface. The developed model, assuming various solutions of the additional Jawor-Solina pumped storage power plant, allows multivariate analysis of the effects, both in the sphere of electricity production and financial . The flexible design of the model is a proposal with the help of which it is possible to develop and test decision-making mechanisms in the energy and financial area of cascade operation. Expansion of the energy cascade with a new element of the pumped storage power plant affects the functioning in its current form of the Solina-Myczkowce PSPS. The results show the directions of changes that should be made in the operating strategy of such an expanded energy complex. The analyses are supported by a number of charts and a commentary.
</abstract>

The influence of the planned Solina-Jawor pumped storage power plant on the operating regime of the Solina-Myczkowce power plant

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Volume 121 (2024): Issue 1 (January 2024)

Experimental tests of steel double-type balcony connections

Human centric lighting luminaires: practical design

The influence of the planned Solina-Jawor pumped storage power plant on the operating regime of the Solina-Myczkowce power plant

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